Revelation 9:13-15

New International Version

¹³ The sixth angel sounded his trumpet, and I heard a voice coming from the four horns^(A) of the golden altar that is before God.^{(B) 14} It said to the sixth angel who had the trumpet, “Release the four angels^(C) who are bound at the great river Euphrates.”^{(D) 15} And the four angels who had been kept ready for this very hour and day and month and year were released^(E) to kill a third^(F) of mankind.^(G)